Paragraph 1
Underground
affect Earth's
. Geophysicist Ki-Weon Seo has discovered that we have extracted so much
water that the
of Earth's
has changed. This has caused the North
to move. It is drifting by more than four centimetres a
. Professor Seo calculated that
used more than two trillion
of groundwater between 1993 and 2010. This caused
to wobble.
